Two long coaxial aluminum cylinders are charged to a potential difference of 50 statvolts. The inner cylinder has an outer diameter of 6 cm, and the outer cylinder has an inner diameter of 8 cm. With the outer cylinder stationary, the inner cylinder is rotated around its axis at a constant speed of 30 revolutions per second. Describe the magnetic field this produces and determine its intensity in gauss. What if both cylinders are rotated in the same direction at 30 revolutions per second?